The colours in and around the thermal pools at Yellowstone really amazed and interested us. We took so many photos we really thought we should share some of them with you. The stunning colours are formed by thermophyles (heat loving organisms).
From a Visitor Information brocure:
‘These organisms – bacteria, algae and archaea – are primitive life forms that have inhabited the earth for almost four billion years. Cyanobacteria, which are common in the Old Faithful area, thrive in temperatures up to 75 degrees Celsius. Other thermophiles exist in even hotter water.’